Ogawa, Masaki http://orcid.org/0000-0001-5856-208X
Omata, Shingo
Kan, Hirohito
Arai, Nobuyuki
Asai, Marehiko
Urano, Misugi
Shibamoto, Yuta
Article History
Received: 20 January 2018
Revised: 20 April 2018
Accepted: 20 April 2018
First Online: 25 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures in this study were performed in accordance with the ethical standards of our institutional research board and with the 1964 Declaration of Helsinki.
: This study did not contain experiments on human or animal participants.
: Informed consent was waived in this retrospective study.